Including Additional Energy Absorbing Means, E.g., Fluid Or Friction Damping, Etc. Patents (Class 248/562)
  • Patent number: 4974818
    Abstract: A fluid-filled elastic mounting structure including a first and a second support member, an elastic body for elastically connecting the first and second support members, a closure member which partially defines a fluid chamber, a partition assembly for dividing the fluid chamber into a pressure-receiving chamber and an equilibrium chamber, and at least one orifice for fluid communication between the pressure-receiving chamber and the equilibrium chamber. The first support member includes a hollow cylindrical member extending in a direction perpendicular to the load-receiving direction. The mounting structure of the invention further includes a stopper member which is formed from a plate-like member and secured to said second support member, so as to extend from the second support member toward the first support member, and surround the first support member such that the hollow cylindrical member is spaced apart from the stopper member by a suitable distance.
    Type: Grant
    Filed: November 17, 1989
    Date of Patent: December 4, 1990
    Assignee: Tokai Rubber Industries, Ltd.
    Inventor: Rentaro Kato
  • Patent number: 4969624
    Abstract: A suspension of a vehicle seat comprises a bearing plate to which the vehicle seat is secured, a first base mounted on the floor of the vehicle cabin, and mechanical resilient elements provided between the first base and bearing plate. Arranged vertically in line with the axis of symmetry of the first base is an electrodynamic exciter including a second base, a magnetic circuit in the form of outer and inner cylindrical elements, two groups of coils secured at the inside surface of the outer element of the magnetic circuit and at the outside surface of the inner element of the magnetic circuit. The electrodynamic exciter further comprises a guide mechanism in the form of a cup with a cover plate. Attached to the cover plate of the cup of the guide mechanism is a magnetic unit.
    Type: Grant
    Filed: November 1, 1989
    Date of Patent: November 13, 1990
    Assignee: Vsesojuzny Nauchno-Issledovatelsky Institut Okhrany Truda i Tekhniki Bezopasnosti Chernoi Metallurgii (Vniitbchermet)
    Inventors: Lev I. Ustelentsev, Galina N. Pogorelova
  • Patent number: 4964623
    Abstract: A fluid filled resilient bushing assembly for vibration control in the radial and axial directions or combinations thereof, particularly adapted for use in a suspension system, which comprises an elongate inner rigid member and an elongate outer rigid sleeve member, a resilient member interposed between the inner and outer members. The resilient member together with the outer member defines two circumferentially and axially-spaced chambers and a restricted passageway connecting the chambers. The chambers and passageway contain an incompressible fluid. By axially and circumferentially spacing the chambers, the desired damping in the axial and radial direction is obtained.
    Type: Grant
    Filed: December 7, 1987
    Date of Patent: October 23, 1990
    Assignee: Lord Corporation
    Inventor: Richard P. Thorn
  • Patent number: 4962915
    Abstract: A fluid-filled mount for damping vibrations imparted along X, Y and Z axes is disclosed. The mount has a rigid shell containing an elastomeric block into which is molded a connecting member and pairs of fluid chambers interconnected by conduits. When the connecting member is displaced relative to the shell, fluid is pumped through the conduits between the chambers.
    Type: Grant
    Filed: July 18, 1989
    Date of Patent: October 16, 1990
    Assignee: Lord Corporation
    Inventor: Richard P. Thorn
  • Patent number: 4957279
    Abstract: Fluidless mounts capable of damping motion in several directions are disclosed. The mounts utilize hysterisis losses in an elastomeric material to absorb energy. The losses are induced by rigid rib and grooved elements which are displaced along the surface of an elastomeric layer in pressure engagement therewith. Amplitude-sensitive damping embodiments are disclosed.
    Type: Grant
    Filed: July 18, 1989
    Date of Patent: September 18, 1990
    Assignee: Lord Corporation
    Inventor: Richard P. Thorn
  • Patent number: 4946147
    Abstract: A fluid-filled elastic mounting structure including a first fand a second support members disposed in spaced-apart relation with each other in a load-receiving direction, an elastic body elastically connecting the support members, a closure member secured to the second support member, so as to define therebetween a fluid chamber filled with a non-compressible fluid between the elastic body and the second support member, a partition assembly disposed within the fluid chamber, so as to divide the fluid chamber into a pressure-receiving chamber, and an equilibrium chamber, and a first orifice for fluid communication between the two chambers. The partition assembly has an opening communicating with the two chambers. A first and a second movable member are disposed within the opening of the partition assembly, such that the two movable members are spaced apart from each other in the load-receiving direction so as to define an intermediate chamber.
    Type: Grant
    Filed: March 13, 1989
    Date of Patent: August 7, 1990
    Assignee: Tokai Rubber Industries, Ltd.
    Inventors: Rentaro Kato, Ryouji Kanda, Kiyohiko Yoshida
  • Patent number: 4944482
    Abstract: The invention relates to a hydraulic vibration damping bushing comprising two tubular rigid armatures (1, 2) jointly united by an elastomeric body (3) configured in such a way to form between themselves at least two tight pockets (4, 4') communicating with each other by a narrow channel (7), which along with the pockets is filled with a liquid. One of these pockets (4) contains an elastomeric pad (10) added on the concave face of a curved rigid plate (11) which abuts on the internal face of the external armature (2), said pad being, in the resting position of the bushing, diametrically precompressed between the two armatures.
    Type: Grant
    Filed: September 13, 1989
    Date of Patent: July 31, 1990
    Assignee: Hutchinson
    Inventors: Bernard Bouhier, Bernd-Siegfried Butow
  • Patent number: 4941640
    Abstract: A vibration isolating apparatus comprises an upper bed which is placed with an object thereon, a lower bed which directly receives a vibration caused by an earthquake, a support mechanism for supporting the upper bed so that the upper bed is relatively displaceable with respect to the lower bed in a horizontal direction with a small friction, a plurality of guide members separated from each other and provided on the upper and lower beds, a wire member provided around the guide members in a form of a loop, and a spring mechanism for absorbing a tension in the wire member depending on a deformation of a shape of the loop formed by the wire member due to a displacement of the lower bed with respect to the upper bed caused by the earthquake.
    Type: Grant
    Filed: February 10, 1988
    Date of Patent: July 17, 1990
    Assignee: Tokico Ltd.
    Inventors: Ken Nakamura, Toshiaki Onoda, Yoshihiro Gofuku
  • Patent number: 4936556
    Abstract: A liquid-sealed body mount comprising an inner and an outer cylinders concentrically disposed, a first and a second rubber members provided mutually in axially spaced relation and connecting both cylinders therebetween, an intermediate rubber plate means partitioning axially an enclosure surrounded by both cylinders and both rubber members into a first and a second liquid chambers, an orifice for communication with both chambers apertured in the intermediate means, and a liquid filled in both chambers. The intermediate rubber plate means is configured, when assembled, so as to be preliminarily deformed in the shearing direction, assuming a shade-like form and, when imposed with a prescribed load, so as to retain a neutral state of intersecting orthogonally both cylinders, whereby equalized vibration-preventing characteristics against oscillations on both bound and rebound sides are achieved.
    Type: Grant
    Filed: May 25, 1989
    Date of Patent: June 26, 1990
    Assignees: Toyo Tire & Rubber Co., Ltd., Toyota Jidosha Kabushiki Kaisha
    Inventors: Katsunori Makibayashi, Kouji Sawada, Shigeru Haino, Motoo Kunihiro, Kiyonobu Nariai, Kouichi Mori
  • Patent number: 4932636
    Abstract: A hydraulic-elastomeric mount has a pair of liquid filled chambers formed by elastomeric walls and separated by a rigid partition having an orifice that connects the chambers to effect damping. The partition supports a damping decoupler for limited reciprocal movement so as to effect cyclic volume change in the chambers to eliminate damping under certain conditions. A bypass through the decoupler acts to smoothen the transition between damping and no damping and also lowers the damping level to a prescribed value.
    Type: Grant
    Filed: May 12, 1989
    Date of Patent: June 12, 1990
    Assignee: General Motors Corporation
    Inventors: Ronald L. Phillips, Richard A. Muzechuk
  • Patent number: 4927122
    Abstract: A vibration damper comprising a housing containing two bell-shaped membranes of resiliently deformable material facing one another, and defining a single liquid filled chamber. The damper is interposed between two devices to be isolated, one of such devices being affixed to the housing and the other being affixed to a rod, which passes between both membranes, with a circular washer shaped element located between the tops of the bells of the membranes. Upon movement of the rod and deformation of the membranes the liquid is subjected to friction due to shearing of the fluid against the housing due to the movement of the washer through the liquid in a non-throttling arrangement.
    Type: Grant
    Filed: November 30, 1988
    Date of Patent: May 22, 1990
    Assignee: Applied Power Inc.
    Inventors: Reinhold Brumme, Roger Desons
  • Patent number: 4921201
    Abstract: In an antivibratory support intended to be interposed between a vehicle chassis and an internal combustion engine, which support comprises a work chamber (A) and a compensation chamber (B) filled with a liquid (L), joined together by a restricted passage (9) and separated from each other by a dividing wall (8) equipped with a deformable or mobile valve (10), this valve is mounted on its seat (13) by means of a metal washer (14, 15) bearing radially with a buttressing effect against an internal cylindrical face (16) integral with the seat (13), said washer being formed by a flat ring (14) extended outwards by a circle of lugs (15) extending in the form of a truncated cone.
    Type: Grant
    Filed: August 2, 1988
    Date of Patent: May 1, 1990
    Assignee: Hutchinson
    Inventor: Pierre Jouade
  • Patent number: 4919402
    Abstract: The acceleration which is induced by the vibration applied to the device is sensed along with the pressure which develops in an auxiliary or expansion chamber associated with the main working chamber. When the product of the pressure and the acceleration exhibits a predetermined characteristic, a voltage is applied to the electrodes in the orifice passage to increase the viscosity of the ERF.
    Type: Grant
    Filed: June 12, 1989
    Date of Patent: April 24, 1990
    Assignee: Nissan Motor Co., Ltd.
    Inventor: Kazuhiro Doi
  • Patent number: 4915365
    Abstract: A hydraulic mounting device for resiliently supporting an engine on a frame includes a support bracket for attachment to a vehicle frame and a cord insert for attachment to an engine. A first chamber and second chamber is formed therein. A partition separates the first and second chamber. The partition includes a first aperture to allow fluid flow between the first and second chamber. The partition also includes a third chamber formed between the first and second chamber and a second aperture in the third chamber to allow fluid flow between the first and second and third chamber.
    Type: Grant
    Filed: September 4, 1987
    Date of Patent: April 10, 1990
    Assignee: The Standard Products Company
    Inventor: Ping Lee
  • Patent number: 4910842
    Abstract: Apparatus for the pressure treatment of webs of material, such as the wet section of a paper-making machine, including a damping device fixedly connected to the protruding end of the roll for damping vibrations of the roll occuring during rotation thereof. The damping device comprises a pair of annular mass rings which surround the protruding roll end and are resiliently supported within an enclosed housing which includes frictional elements bearing against the rings.
    Type: Grant
    Filed: November 12, 1987
    Date of Patent: March 27, 1990
    Assignee: Eduard Kusters Maschinenfabrik GmbH & Co. KG
    Inventor: Bernhard Brendel
  • Patent number: 4909490
    Abstract: Elastic anti-vibration isolation apparatus with integrated hydraulic damping, consisting of a thick conical membrane of elastomer compound bonded to internal and external rigid frames, and crimped in a casing containing a damping liquid, characterized by the fact that the rigid partition which separates the variable volume chamber from the expansion space has a passage for the damping liquid realized in one or two parts, the dimensions of which can be adjusted by grinding or lathe-working at least one of the components, base or cover, of the rigid partition, or by the insertion of shims between the constituent parts, thereby making it possible, using a set of similar components, to realize a range of elastic mountings with damping characteristics adapted to desired utilization frequencies.
    Type: Grant
    Filed: April 4, 1988
    Date of Patent: March 20, 1990
    Assignee: Caoutchouc Manufacture et Plastiques
    Inventor: Etienne de Fontenay
  • Patent number: 4909489
    Abstract: A mounting device includes an elastomeric body formed with first and second recesses which define a working chamber and an expansion chamber which are filled with an ERF (electrorheological). The recesses are enclosed by an annular member to define the chambers. First and second helical orifice passages formed about the periphery of the annular member fluidly connect the chambers. A cylindrical outer casing which encloses the elastomeric body and annular member is grounded to act as a first electrode. Strips disposed in the orifice passages act as electrodes on which voltages can be selectively and separately impressed.
    Type: Grant
    Filed: March 30, 1989
    Date of Patent: March 20, 1990
    Assignee: Nissan Motor Co., Ltd.
    Inventor: Kazuhiro Doi
  • Patent number: 4907786
    Abstract: A fluid-filled elastic mount having an elastic body which elastically connects a first and a second support member, a closure member which cooperates with the second support member and the elastic body to define a fluid chamber, a partition member which divides the fluid chamber into a pressure-receiving chamber and an equilibrium chamber, and a restrictor passage for restricted fluid communication between the two chambers. The partition member consists of an integrally formed member which has a thin-walled inner portion and a thick-walled outer portion outside of the inner portion. The outer portion has a circumferential groove and is held in pressed contact with the second support member such that the groove is closed so as to define the restrictor passage. The inner portion includes a double-layered structure consisting of a first layer formed of a first elastic material, and a second layer formed of a second elastic material which has a larger modulus of elasticity than the first elastic material.
    Type: Grant
    Filed: August 24, 1988
    Date of Patent: March 13, 1990
    Assignee: Tokai Rubber Industries, Ltd.
    Inventors: Masaaki Okazaki, Itsuro Kadomura
  • Patent number: 4905956
    Abstract: A fluid mount for an inboard marine engine includes a combination of a solid elastomer and a fluid dampening means to significantly improve vibration isolation and cushioning under normal shock loads. The fluid dampening means is constructed to lock-up and become inoperative under heavy shock loads to protect the mount against overload failure. An improved mounting system utilizing the fluid mounts optimizes the performance thereof.
    Type: Grant
    Filed: May 26, 1988
    Date of Patent: March 6, 1990
    Assignee: Brunswick Corporation
    Inventors: Alvin R. Zemlicka, Robert R. Radtke
  • Patent number: 4905955
    Abstract: A damping support, which is particularly intended for reciprocating engines of motor vehicles, comprises a tubular support body intended for fixing to a support structure and closed at one end so as to define a chamber containing a damping liquid, an attachment member intended for fixing to an oscillating member and connected coaxially to the other end of the tubular support body by an annular element of elastomeric material, a transverse disc member connected to the attachment member and immersed in the damping liquid and having holes for the passage of the liquid, and an oburator associated with the disc for varying the area for passage of the liquid through the holes. In particular, the support enables a reduction of the high-frequency vibrations over a wide frequency range.
    Type: Grant
    Filed: July 7, 1988
    Date of Patent: March 6, 1990
    Assignee: Ages S.p.A.
    Inventors: Gustavo Brizzolesi, Mario Perino
  • Patent number: 4903951
    Abstract: A fluid-filled vibroisolating device comprises a joint member adapted to be joined to a vibrating body such as an engine. A support member is adapted to be supported on a supporting body such as a vehicle frame and defining an expandable and contractible auxiliary fluid chamber filled with a fluid. An elastomeric member interconnects the joint and support members and is disposed in a vibrating direction in which the vibrating body vibrates. The elastomeric member, the joint member, and the support member jointly define an expandable and contractible main fluid chamber filled with a fluid. A partition is mounted in the support member and separates the main and auxiliary fluid chambers from each other. The partition has flow regulators for regulating the flow of the fluid between the main and auxiliary fluid chamber. A reinforcing member is integrally formed with the elastomeric member for preventing the elastomeric member from being collapsed.
    Type: Grant
    Filed: May 11, 1988
    Date of Patent: February 27, 1990
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Yasuo Miyamoto, Keiichi Uchiyama
  • Patent number: 4903950
    Abstract: A hydraulic antivibratory support is provided comprising a rigid base (4), a rigid annulus (1), a resilient annular support wall (6) sealingly connecting the base to the annulus and a flexible membrane (7) sealingly connected to the annulus, the inside of the sealed case thus formed being divided by a sealed dividing wall into two chambers connected together through a restricted passage, and a liquid mass filling the two chambers. A traction resistant cable section (13) is situated inside the support and is fixed to the case and to the rigid annulus so that the relative movements of these two elements away from each other are limited by said cable section being placed under traction.
    Type: Grant
    Filed: October 21, 1988
    Date of Patent: February 27, 1990
    Assignee: Hutchinson
    Inventor: Daniel Gregoire
  • Patent number: 4901986
    Abstract: A hydraulic mount assembly is disclosed having a partition forming two hydraulic chambers and including a damping decoupler. A primary chamber is formed by an elastomeric member and a secondary chamber by a resilient diaphragm. During dynamic loading of the mount, fluid passes through an orifice between the two chambers of the mount causing expansion and contraction of the diaphragm. An expandable, pneumatic bladder is mounted within the primary chamber. A tube provides fluid communication between the bladder and the atmosphere. When a valve in this tube is open, air freely enters and escapes the bladder in symphony with the vibrating mount. Alternatively, the valve may be closed and a positive pressure provided to the bladder from a variable pressure fluid supply. By actively controlling bladder expansion and contraction in this manner, the dynamic rate of the mount assembly may be selectively reduced at relatively high vibration frequencies; that is, those over 20 Hz.
    Type: Grant
    Filed: January 19, 1989
    Date of Patent: February 20, 1990
    Assignee: General Motors Corporation
    Inventor: Stanley E. Smith
  • Patent number: 4898264
    Abstract: The fluid circuitry connecting variable volume chambers of the semiactive damper includes valve assemblies which collectively effect mechanical implementation of a preselected damper control policy that is based in part upon changes in the sign of the absolute velocity of a supported member of the system of which the damper forms a part. One of the valve assemblies has an inertial body which is connected to a movable system member but which remains substantially stationary during system operation. The inertial body and a valve member of the assembly are interconnected by a linkage which in one embodiment includes a frictional type connector, and which in another embodiment includes a dashpot.
    Type: Grant
    Filed: April 3, 1989
    Date of Patent: February 6, 1990
    Assignee: Lord Corporation
    Inventor: Lane R. Miller
  • Patent number: 4896867
    Abstract: Hydraulically damping elastic bearing, in particular engine mounts for motor vehicles, with two rigid end walls opposite one another in the axial direction and at least two chambers containing damping fluid arranged axially one behind the other, whereby the chambers are connected for fluid communications with one another by a passage running in an annular fashion. For the variable modification of the length of the passage, partitions are inserted in the component containing the passage, which partitions divide the passage into individual passage segments connected for fluid communication with one another by an opening.
    Type: Grant
    Filed: February 8, 1988
    Date of Patent: January 30, 1990
    Assignee: Boge AG
    Inventors: Georg Schyboll, Heinz Brenner
  • Patent number: 4893798
    Abstract: A fluid-filled elastic bushing including an inner sleeve and an outer sleeve disposed radially outwardly of the inner sleeve, an elastic member elastically connecting the inner and outer sleeves, so as to provide an assembly having a plurality of fluid-filled chambers which are spaced apart from each other in a circumferential direction of the sleeves and an orifice for fluid communication between the chambers, and a wing member disposed in at least one pressure-receiving chamber of the fluid chambers to which a vibrational load is applied. The wing member is supported by one of the sleeves and the elastic member, and cooperates with the assembly to define a restricted portion within the pressure-receiving chamber.
    Type: Grant
    Filed: December 5, 1988
    Date of Patent: January 16, 1990
    Assignee: Tokai Rubber Industries, Ltd.
    Inventors: Masayuki Hibi, Nobuo Matsumoto, Yoshiki Funahashi
  • Patent number: 4893797
    Abstract: The support is so arranged as to have a wider damping characteristic. For this purpose, it comprises two expansion chambers connected to the same work chamber by ducts having different characteristics so that the liquid contained in these ducts is put into resonance at different frequencies. The two expansion chambers are disposed concentrically to each other on the same side of the work chamber and are defined by a separating partition and by a single diaphragm.
    Type: Grant
    Filed: July 6, 1988
    Date of Patent: January 16, 1990
    Assignees: Automobiles Peugeot, Automobiles Citroen
    Inventors: Marcel Le Fol, Pascal Robic
  • Patent number: 4893800
    Abstract: A power unit mount includes a housing in which first and second electrode bodies are suspended and which is filled with a fluid which exhibits a change in viscosity when a voltage is applied thereacross. The control of the voltage application is determined by a control circuit which is operatively connected to a plurality of sensors which include an engine speed sensor, a road wheel speed sensor, a relative displacement sensor and an absolute displacement sensor. A variant includes a solenoid powered vibration generator which can be energized under predetermined conditions in a manner to improve vibration attenuation.
    Type: Grant
    Filed: August 11, 1988
    Date of Patent: January 16, 1990
    Assignee: Nissan Motor Company, Limited
    Inventor: Toshiyuki Tabata
  • Patent number: 4893799
    Abstract: Antivibration isolation device with hydraulic damping of radial elasticity, consisting of four concentric tubes bonded two by two to the elastic lateral walls, which by simultaneous fitting form two chambers connected by a long laminar passage for an inertial damping fluid, shunted by limited deformation of a thin membrane, to modulate the apparent dynamic rigidity as a function of the frequency. Process for the realization of such a device. The object of the invention is to provide antivibration isolation for machines or motor vehicles.
    Type: Grant
    Filed: January 22, 1988
    Date of Patent: January 16, 1990
    Assignee: Kleber Industrie
    Inventor: Etienne de Fontenay
  • Patent number: 4889326
    Abstract: In an antivibratory support interposed between two rigid elements (1-3 and 4-5) and comprising a work chamber (A) and a compensation chamber (B) separated by a dividing wall (8) with a mobile valve (10) and connected together by a restricted passage (9), a rotary cam (13) is provided immersed in the work chamber and serving as end of travel stop for the valve, the rotational movements of this cam being controllable from outside the support by means of a rod (14) passing sealingly through the dividing wall of the chamber. The cam is coupled to a a member (19) for controlling the opening of a second restricted passage (18).
    Type: Grant
    Filed: June 27, 1988
    Date of Patent: December 26, 1989
    Assignee: Hutchinson
    Inventor: Jean-Paul Bouhours
  • Patent number: 4887788
    Abstract: A device for absorbing the energy of vibration of one of two abutting members which has begun to vibrate due to forces applied to either of the two abutting members, so as to reduce the frequency and magnitude of vibration of one of the two abutting members. The primary energy absorbing element is a piece of elastomeric resilient material which contains a core (or cores) of a substantially incompressible, highly efficient dampening material; the presence or absence of this core of highly efficient dampening material will depend upon desired device stiffness and dampening characteristics. The primary energy absorbing element is surrounded by a flexible reinforced shell which contains and restrains said element, yet allows said element to deform in the transverse and vertical directions. Two end pieces or mounting plates are secured to opposite ends of the primary energy absorbing element.
    Type: Grant
    Filed: January 15, 1988
    Date of Patent: December 19, 1989
    Assignee: The Gates Rubber Company
    Inventors: Richard J. Fischer, Douglas J. Swanson
  • Patent number: 4887398
    Abstract: A hydraulic buffer, filled with a compound having the behaviour of a liquid to a certain extent, mounted beneath the foundation of buildings or other structures in order to sustain the structures during earthquakes. The buffer is made from reinforced flexible material and consists of two parallel circular plates (1,2), on the circumference connected to each other by a torus (5), in such a way that the torus and the drum-like space between the circular plates communicate freely, while the axis of the torus is upright, in order to permit the buffer to accommodate relative transverse movement between the circular plates.
    Type: Grant
    Filed: August 15, 1988
    Date of Patent: December 19, 1989
    Inventor: Hendrik Lenten
  • Patent number: 4883250
    Abstract: A vibration-proof and earthquake immune mount system connecting machinery or a structure to a foundation which may be subject to external vibrations or earthquakes. The mount system includes a number of mounts operating in conjunction with a number of dampers, and both the mounts and the dampers function regardless of the direction of the external disturbance. In the mount this ominidirectionality is achieved by using a low-friction rolling contact between a ball attached to the machinery or structure and a dished surface attached to the foundation. Damping is provided by eddy current dissipation when a conductor plate attached to the structure of machinery and free to move in two directions is placed between the poles of an electromagnet which is integral with the foundation, and activated by a controller energized when a sensor detects motion of the foundation.
    Type: Grant
    Filed: March 10, 1988
    Date of Patent: November 28, 1989
    Assignees: Kajima Corporation, Kayaba Industry Co., Ltd.
    Inventors: Kenichi Yano, Hiroshi Midorikawa, Toshiaki Kamei, Takeharu Shizume
  • Patent number: 4883260
    Abstract: A fluid-filled elastic bushing including an annular elastic body which is interposed between an inner and an outer sleeve and has a pair of axially intermediate connecting portions which define diametrically opposed parts of the circumference of the elastic body. The elastic body has an opening formed through its axially intermediate portion in its diametric direction, such that the opening is partially defined by the connecting portions and is open in diametrically opposed parts of the outer circumferential surface of the elastic body which are located between the connecting portions. The opening is closed by the outer sleeve, at the diametrically opposed parts of the outer circumferential surface of the elastic body, whereby a fluid chamber filled with a highly viscous fluid is defined around an axially intermediate portion of the inner sleeve.
    Type: Grant
    Filed: September 12, 1988
    Date of Patent: November 28, 1989
    Assignee: Tokai Rubber Industries, Ltd.
    Inventor: Ryouji Kanda
  • Patent number: 4881712
    Abstract: A hydraulic engine mounting system for a vehicle engine includes a pair of engine mount assemblies having elastomeric bodies including two longitudinally aligned integral engine mounts. The mounts are in fluid communication with one another via an integral orifice track molded as a groove at the interface between the elastomeric body and a mating base plate. The engine mount assembly is mounted on a vehicle frame such that the common axis of the hydraulic chambers is situated transversely to the torque axis of the engine. During operation, the engine pitches about this torque axis. The pitching action of the engine causes one end mount to compress forcing hydraulic fluid along the orifice track into the other mount. The other mount simultaneously expands and receives this excess fluid. Advantageously, the flow of fluid along the orifice track produces a damping effect of the motion and vibration to provide isolation from the vehicle frame.
    Type: Grant
    Filed: June 21, 1988
    Date of Patent: November 21, 1989
    Assignee: General Motors Corporation
    Inventor: Saiman Lun
  • Patent number: 4880215
    Abstract: A fluid-filled elastic mount for flexible coupling of two members includes a first support member and a second support member, an elastic body interposed between the first and second support members, a closure member for partially defining a fluid chamber filled with a non-compressible fluid, a first partition device for dividing the fluid chamber into a pressure-receiving chamber and an equilibrium chamber, and a device for defining a first restricted passage for restricted fluid communication between the pressure-receiving chamber and the equilibrium chamber. The fluid-filled elastic mount further includes a second partition member having a peripheral portion secured to an intermediate portion of the elastic body.
    Type: Grant
    Filed: August 5, 1988
    Date of Patent: November 14, 1989
    Assignee: Tokai Rubber Industries, Ltd.
    Inventors: Motohiro Katayama, Tatsuya Suzuki
  • Patent number: 4877225
    Abstract: A vibration isolator mounted on a support for a vehicle engine or the like which is a vibration source, in which a central limitational passage is formed in a partition wall which divides a fluid chamber filled with a fluid into a pair of small fluid chambers, the central limitational passage providing communication between the pair of small fluid chambers. The central limitational passage can be opened or closed by a valve capable of linearly moving so that the resistance to the fluid flowing through the central limitational passage is changed when vibrations occur. Additional connectable small limitational passages are provided in the valve and partition wall to provide communication between the small fluid chambers when the central limitational passage is closed by the valve. With this structure, vibrations can be absorbed over a wide frequency range.
    Type: Grant
    Filed: March 31, 1988
    Date of Patent: October 31, 1989
    Assignee: Bridgestone Corp.
    Inventors: Takeshi Noguchi, Kazuya Takano, Takashi Kikuchi
  • Patent number: 4875655
    Abstract: A method and apparatus for coupling an engine to a support frame for mounting to a fuselage of an aircraft using a three point vibration isolating mounting system in which the load reactive forces at each mounting point are statically and dynamically determined. A first vibration isolating mount pivotably couples a first end of an elongated support beam to a stator portion of an engine with the pivoting action of the vibration mount being oriented such that it is pivotable about a line parallel to a center line of the engine. An aft end of the supporting frame is coupled to the engine through an additional pair of vibration isolating mounts with the mounts being oriented such that they are pivotable about a circumference of the engine. The aft mounts are symmetrically spaced to each side of the supporting frame by 45 degrees.
    Type: Grant
    Filed: March 13, 1987
    Date of Patent: October 24, 1989
    Assignee: General Electric Company
    Inventors: Stanley I. Bender, Lawrence Butler, Peter W. Dawes
  • Patent number: 4872652
    Abstract: A two-chamber engine mount has a working space and a compensation space which are filled with liquid and connected by a choke aperture having the shape of a canal. The inlet and outlet openings of the choke canal are rigidly related to the choke canal and define its beginning and end. At a distance from the inlet opening of the choke canal, at least one transverse passage opening is provided parallel to the outlet opening. The transverse passage can be shut off by a valve which can be actuated by a signal.
    Type: Grant
    Filed: October 12, 1988
    Date of Patent: October 10, 1989
    Assignee: Firma Carl Freudenberg
    Inventors: Gerhard Rohner, Werner Idigkeit, Klaus Kurr
  • Patent number: 4872651
    Abstract: A fluid filled resilient bushing assembly for rotary vibratory motion control, particularly adapted for use in a joint between a motion inducing member and a base member, having an elongate outer rigid sleeve member, an elongate inner rigid member rotatable with respect to the outer rigid sleeve member and a resilient means interposed between the inner and outer members. The resilient means defines at least two spaced chambers interconnected by an elongate restricted passageway filled with incompressible fluid. The bushing assembly further has a pressure differential inducing means creating a differential in the fluid pressure of the chambers due to the rotary motion of the inner rigid member to permit contraction of one of the chambers, expansion of the second chamber and fluid flow therebetween providing damping of the rotary vibratory motion.
    Type: Grant
    Filed: March 14, 1988
    Date of Patent: October 10, 1989
    Assignee: Lord Corporation
    Inventor: Richard P. Thorn
  • Patent number: 4871150
    Abstract: The support has a generally annular shape and a fixing device extends axially therethrough. It comprises an annular elastically yieldable mass connected to two frames, a semi-toric membrane fixed between the two frames and defnining with the outer surface of the mass a work chamber (A). This chamber communicates with an expansion chamber (B) through a passageway. The support also includes a device for limiting its axial and radial movements. Such a support has a particularly low natural stiffness both in the radial direction and in the transverse direction, which improves the filtering of high frequency vibrations while affording a good damping of trepidations of low frequency and large amplitude.
    Type: Grant
    Filed: January 9, 1989
    Date of Patent: October 3, 1989
    Assignees: Automobiles Peugeot, Automobiles Citroen
    Inventors: Le Salver, Domunique Poupard
  • Patent number: 4871152
    Abstract: A fluid-filled resilient bushing having inner and outer sleeves, and a resilient member interposed between the inner and outer sleeves for primarily damping and isolating vibrating applied in a first diametric direction of the bushing. The bushing has a pair of first fluid chambers disposed in mutually opposed relation with each other in the first diametric direction, a pair of second fluid chambers disposed in mutually opposed relation with each other in a second diametric direction perpendicular to the first diametric direction, and at least one orifice through which the pair of first fluid chambers communicate with each other, so as to permit a working fluid to flow between the first fluid chambers upon application of the vibrations.
    Type: Grant
    Filed: March 10, 1989
    Date of Patent: October 3, 1989
    Assignee: Takai Rubber Industries, Ltd.
    Inventor: Yoshiki Funahashi
  • Patent number: 4871151
    Abstract: A fluid-filled resilient bushing is disclosed, which includes a resilient member interposed between inner and outer sleeves, and an elastically yieldable partition member disposed in an axial void which is formed in the resilient member and extends over an entire axial length of the same. The resilient member and the partition member cooperate with the outer sleeve to fluid-tightly define a pressure-receiving chamber and an equilibrium chamber, which are disposed opposite to each other in a vibration-input direction in which the bushing receives a vibrational load. The chambers are filled with incompressible fluid and communicate with each other through an orifice. The inner and outer sleeves are disposed in eccentric relation with each other in the vibration-input direction.
    Type: Grant
    Filed: March 24, 1988
    Date of Patent: October 3, 1989
    Assignee: Tokai Rubber Industries, Ltd.
    Inventor: Ryouji Kanda
  • Patent number: 4869474
    Abstract: A vehicle engine suspension system in which, in order to reduce `shake` electrically actuated engine mounts are provided, power being supplied to the engine mounts by a control system responsive to vehicle body accelerations (e.g. in the vertical direction). The arrangement is such that when a tendency of the body to move is detected, e.g. by an accelerometer mounted on the body, the engine mounts are actuated so as to generate, between the engine and the body, forces which are of such amplitude and phase as to reduce the shake of the body.
    Type: Grant
    Filed: May 2, 1988
    Date of Patent: September 26, 1989
    Assignee: BTR plc
    Inventors: Anthony Best, David M. Bethell, Raymond Hoole
  • Patent number: 4869478
    Abstract: In a hydraulic antivibratory support for insertion between two rigid elements (1 and 3), and comprising a work chamber (A) and a compensation chamber (B) separated by a dividing wall (6) and joined together by a restricted passage, this restricted passage, defined at both ends by two fixed orifices (31, 32) opening respectively into the two chambers (A and B) is defined over at least a portion of its lateral periphery by a flat or cylindrical face (25) of a rigid rotary valve (26) housed jointingly between the two orifices and connected angularly to the rotor of a small electric motor (19).
    Type: Grant
    Filed: January 25, 1988
    Date of Patent: September 26, 1989
    Assignee: Hutchinson
    Inventors: Jean P. Bouhours, Alain Bellamy
  • Patent number: 4865299
    Abstract: A fluid-filled cylindrical elastic mount having an inner and an outer sleeve which are disposed in mutually spaced-apart relation with each other, and an elastic body interposed between the inner and outer sleeves so as to elastically connect the inner and outer sleeves. The elastic body at least partially defines a fluid-filled chamber located between the inner and outer sleeves in a load-receiving direction in which a vibrational load is applied to the elastic mount. The elastic body includes a thin-walled portion which partially defines the fluid-filled chamber and which elastically yields to permit the chamber to be elastically deformed upon application of the vibrational load. A movable member is accommodated in the fluid-filled chamber such that the movable member is freely movable over a predetermined distance in the load-receiving direction.
    Type: Grant
    Filed: March 2, 1989
    Date of Patent: September 12, 1989
    Assignees: Tokai Rubber Industries, Ltd., Toyota Jidosha Kabushiki Kaisha
    Inventor: Katsuhiro Goto
  • Patent number: 4861005
    Abstract: A mounting for resilient, vibration-damping mounting of components, in particular vehicle components, is constructed as an inner portion, an outer portion surrounding the inner portion at a distance and an elastomeric body disposed between the inner portion and the outer portion. The elastic body has recesses forming fluid chambers which communicate with each other via a throttle pipe and an additional fluid chamber is provided as a pressure chamber for receiving a compressible fluid, wherein the pressure chamber communicates with the fluid chambers connected via the throttle pipe so as to make the manufacture of the mounting simpler and less expensive and to make the setting of the predetermined damping characteristics highly reliable on a broad range.
    Type: Grant
    Filed: June 27, 1988
    Date of Patent: August 29, 1989
    Assignee: General Motors Corporation
    Inventor: Paul Bausch
  • Patent number: 4861003
    Abstract: The bearing includes of a beaker-type housing part in which a soft rubber support spring is arranged bearing a load supporting plate which is enclosed by a disc-type control spring arranged transversely to the support spring. The combination of the control spring and the load support plate is clamped radially pre-stressed in the upper portion of the beaker-type housing part such that the beaker-type housing part is hermetically closed in a gas-tight and liquid-tight manner. A clapper-type damping piston is suspended in a recess at the lower side of the load support plate and is free to move in an axial direction; The piston head is slidably fitted in a substantially exactly fitting manner into a cylindrical tube attached to the bottom of the beaker-type housing part. The hermetically closed bearing is filled with a damping liquid.
    Type: Grant
    Filed: January 20, 1988
    Date of Patent: August 29, 1989
    Assignee: WOCO Franz-Josef Wolf & Co.
    Inventors: Franz J. Wolf, Hubert Pletsch
  • Patent number: 4858900
    Abstract: A bearing arrangement for a drive assembly of a motor vehicle is suggested that has bearings, particularly hydro-bearings, that are arranged on both sides of the engine and elastically support the engine and the drive assembly with respect to the body of the vehicle. The bearings of the assembly on the side of the engine are arranged at the level of the center of gravity and at a distance to the engine and are vertically aligned in such a way that the spring travels of the essentially excited rigid-body vibrations of the assembly extend in the same direction as the vertical longitudinal axes of the bearings. Each compression movement of the bearing that results from a bouncing and pitching vibration and/or a rolling movement can be led to it separately and can be damped jointly.
    Type: Grant
    Filed: February 19, 1988
    Date of Patent: August 22, 1989
    Assignee: Dr. Ing. h.c.F. Porsche Aktiengesellschaft
    Inventor: Ulrich von Broock
  • Patent number: 4858879
    Abstract: A combination viscous and resilient type of mount comprises a rigid boss adapted to be connected to a moving component such as an reciprocating engine, an annular flange adapted to be connected to a stationary support, a resilient element connected between the boss and the annular flange to resiliently supporting the moving component relative to the stationary support, the resilient element having a frustconical shape, a deformable element cooperating with the resilient element to define a chamber for viscous fluid, and a rigid partition connected to the flange and adapted to divide the fluid chamber into a working chamber and a compensation chamber, the partition including at least one orifice through which the two chambers are communicated with each other. A rigid spacer is interposed between the boss and a flange of the moving component and has an annular projection. A rigid ring is inserted into the resilient element and has an outwardly extending annular flange.
    Type: Grant
    Filed: July 6, 1988
    Date of Patent: August 22, 1989
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Yasuo Miyamoto, Katsuyoshi Arai, Keiichi Uchiyama